in the economic literature, firm entry and exit are considered as two basic concepts and the time interval between them, known as life duration, is almost a neglected subject in iranian economy. accordingly, this study tries to investigate the life duration of new firms in food and beverage industry as one of the most manufacturing industries in iran during 1996-2005. factors affecting the life...

The paper studies the patterns of volatility in firm-specific growth rates and stock prices during the early phase of the life-cycle of an old economy industry, the US automobile industry from 1900-1930, and a new economy industry, the US PC industry from 1974-2000. Strikingly similar patterns of volatility are discovered in the early phases of the two industries. The comparison sheds light on ...

This paper focuses on governance modes for service development of mobile telephone networks (GSM, WAP, GPRS, UMTS). ‘Services’ refer to services embodying a specific content. The paper shows that the phase of the life cycle of the network and the service affects the choice of governance mode of new service development projects. Governance modes include internal development by the telecom operat...

The paper studies the patterns of volatility in firm-specific growth rates and stock prices during the early phase of the life-cycle of an old economy industry, the US automobile industry from 1900–1930, and a new economy industry, the US PC industry from1974–2000. Strikingly similar patterns of volatility are discovered in the early phases of the two industries. The comparison sheds light on t...

Abstract The transition toward a circular economy (CE) implies the introduction of innovative practices at firm level. Nevertheless, an important question is under discussion: What are consequences these on performance? Using survey approach, this article analyzes effect CE related to product design economic and environmental performance: life cycle assessment (LCA), upgradability, for disassem...

this paper presents the results obtained from the life cycle assessment (lca) of the productionof sicilian artichokes (cynara scolymus) with the aim of reducing impacts, interpreting the results, suggesting possible improvements and enriching the sustainability knowledge already existing in the agro food field. artichokes represent one of the excellent italian agricultural products even if stil...

urban sinks accumulate phosphorus and other elements and may serve as sources of secondaryraw materials. this paper evaluates phosphorus sources based on their environmental impact. in a life cycleassessment (lca) the conventional production was used as a yardstick against which tomeasure the performanceof two recycling options: spreading of sewage sludge and phosphorus recovery from municipal ...

magnetic levitation (maglev) is amongst the most advanced technologies that are available to the transportation industries. it has already been noticed by decision makers in many countries around the globe. contrary to such high levels of interest, there are no practical algorithms available to the engineers and/or managers to assist them in analyzing economics of the maglev systems. therefore,...